3M 7010349873 Heat Shrink Tubing 1/8 Inch 48 in Black 25 Pc

Product Description

The 3M 7010349873 is a multiple-wall, semi-rigid heat shrink tubing designed for wire and cable protection in electrical and datacom applications. Constructed from co-extruded polyolefin with selective cross-linking, it delivers a 2.5:1 shrink ratio and an integral meltable inner wall that flows when heated to create a moisture-resistant seal around conductors or splices. Each stick measures 48 inches in length, making it straightforward to cut to job-specific lengths. Electricians and low-voltage installers use this tubing for terminations, splice insulation, and strain relief where a single-wall tube would not provide adequate sealing.

This tubing is suited for residential and commercial electrical work, panel wiring, harness fabrication, and field splicing in environments where moisture ingress or vibration is a concern. The semi-rigid polyolefin construction holds its shape before and after shrinking, which helps maintain conductor alignment in tight raceways or junction boxes. Each order includes 25 sticks, each 48 inches long, providing enough material for high-volume production runs or repeat service calls.

Key Features

• 2.5:1 shrink ratio accommodates a range of wire gauges and bundle diameters
• Co-extruded multiple-wall construction with meltable inner wall for sealed terminations
• Semi-rigid polyolefin maintains shape before and after recovery
• 48-inch stick length allows flexible cut-to-length use on the job
• Black color aids in UV protection and visual contrast against light-colored wiring
• Comes in a 25-piece pack for high-volume or repeat applications

Compatibility

Designed as an OEM-style heat shrink solution for use with copper and aluminum conductors in low-voltage and line-voltage electrical installations where a sealed, semi-rigid insulation sleeve is required.

Installation Notes

Installation should be performed by a qualified electrician following applicable NEC guidelines. De-energize all circuits before applying heat shrink tubing to any conductor or splice. Use a calibrated heat gun rather than an open flame to ensure uniform shrink and proper inner-wall melt without scorching the tubing. Allow the tubing to cool fully before restoring power or applying mechanical stress to the termination.

Technical Specifications

• Shrink Ratio: 2.5:1
• Recovered Inside Diameter: 1/8 inch
• Stick Length: 48 inches
• Wall Type: Multiple-wall, semi-rigid with meltable inner wall
• Material: Polyolefin (co-extruded, selectively cross-linked)
• Color: Black
• Package Quantity: 25 pieces
• Weight: 0.05 pounds
• UPC: 00051128597125

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010349873